Arsene Wenger has played down concerns over Alexandre Lacazette being substituted in games.

Wenger was asked why he has substituted Lacazette 10 times in the Premier League this season, but the manager insisted there is nothing untoward behind that statistic.

He said: "First of all, I'd like to say that you sub strikers more than defenders because they have to create, provoke and be incisive.

"But I think he has adapted physically to the Premier League and I am very happy with him.

"I also do it [substitute Lacazette] because I have options on the bench who are fresh and can give us other variations in attack.

"Physically, the Premier League is very demanding and demands a lot of work. If you look at other teams they also change strikers after 70 or 80 minutes.

"Sometimes they [strikers] work on their own against two or three people. In attack you provoke, and at the back to respond, and that [provoking] is more difficult, more demanding."